Filament spool holder for three-dimensional printer



FIG. 1 is a front perspective view of a design for a filament spool holder for three-dimensional printer.

FIG. 2 is a rear perspective view of the design.

FIG. 3 is a left side view of the design.

FIG. 4 is a right side view of the design.

FIG. 5 is a front view of the design.

FIG. 6 is a back view of the design.

FIG. 7 is a top view of the design; and,

FIG. 8 is a bottom view of the design. 

CLAIM What is claimed is the ornamental design for a filament spool holder for three-dimensional printer, as shown. 